TagsAhoy lets you search all your tags, across different sites, from one location.

“TagsAhoy lets you search all your tags, across different sites, from one location.
Just sign up (it's free), enter your account information for the sites where you use tags, and you're done--you can search all your tags from one place. Takes a few minutes.”


Your tags scattered all over the place and want to know where your tags are? Give TagsAhoy a spin. This simple yet straightforward app tracks down your tags like Lassie sniffing out danger. To use it you’ve got to sign up—just think of a username, password, and of course, you’ll need an email address. Current sites supported include: del.icio.us, Flickr, Gmail, Squirl, Librarything and Connotea. A tag cloud is in the works and if you’d like to see more services added just email.
More at:http://www.tagsahoy.com/